Biochemical Tests – Practical Skills Ep 2

In A-Level biology, there are four biochemical tests to learn for four different biological molecules. This article gives full details of the tests, and a helpful colour summary at the bottom. Test for reducing and non-reducing sugars A sugar is a monosaccharide or disaccharide. The vast majority of sugars learnt about in A-Level biology (glucose,... Continue Reading →

Polysaccharides – Biological Molecules Ep 8

Last week we looked at glucose and disaccharides, which are simple carbohydrates. However, many carbohydrate molecules are made up of long chains of monosaccharides joined together to form polysaccharides. Today we will look at polysaccharides made from glucose. We saw in the last article that to form the disaccharide maltose, two glucose molecules are joined... Continue Reading →

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